11800102085 has 4 divisors (see below), whose sum is σ = 14160122508. Its totient is φ = 9440081664.

The previous prime is 11800102081. The next prime is 11800102121. The reversal of 11800102085 is 58020100811.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4321484644 + 7478617441 = 65738^2 + 86479^2 .

It is a cyclic number.

It is not a de Polignac number, because 11800102085 - 2² = 11800102081 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11800102081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1180010204 + ... + 1180010213.

It is an arithmetic number, because the mean of its divisors is an integer number (3540030627).

Almost surely, 2^11800102085 is an apocalyptic number.

It is an amenable number.

11800102085 is a deficient number, since it is larger than the sum of its proper divisors (2360020423).

11800102085 is an equidigital number, since it uses as much as digits as its factorization.

11800102085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2360020422.

The product of its (nonzero) digits is 640, while the sum is 26.

Adding to 11800102085 its reverse (58020100811), we get a palindrome (69820202896).

The spelling of 11800102085 in words is "eleven billion, eight hundred million, one hundred two thousand, eighty-five".